Method and a system for converting liquid products into free-flowing powders with spray drying
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United States of America Patent
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Issued Date -
Sep 30, 2004
app pub date -
Mar 26, 2004
filing date -
Apr 26, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a method and a system for converting liquid products from the cheese making or casein producing industry into substantially free-flowing powdery products, by heating the liquid product to a temperature above the crystallisation temperature of any component in the liquid product in a heat exchanger, flash separating volatile components from said heated liquid product to obtain a paste concentrate, and spray drying said paste to obtain a free flowing powder. By the present method it has been found that it is possible to substantially avoid formation of crystals before atomization and thereby on the one hand render atomization possible. Secondly it has been found that the crystallisation process according to the present method takes place in the spray dryer during the drying process and probably during the conditioning /cooling in the fluid bed. This means that there is no need for crystallisation tanks and for heavy-duty mixers.
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